Camera optical lens

ABSTRACT

Provided is a camera optical lens including first to sixth lenses. The camera optical lens satisfies following conditions: 0.45≤f1/f≤0.80; −10.00≤R9/R10≤−1.50; and 0.35≤d3/d4≤0.70, where f denotes a focal length of the camera optical lens; f1 denotes a focal length of the first lens; R9 denotes a curvature radius of an object side surface of the fifth lens; R10 denotes a curvature radius of an image side surface of the fifth lens; d3 denotes an on-axis thickness of the second lens; and d4 denotes an on-axis distance from an image side surface of the second lens to an object side surface of the third lens. The camera optical lens has good optical performance while achieving ultra-thin, long-focal-length lenses having large apertures.

TECHNICAL FIELD

The present disclosure relates to the field of optical lens, and more particularly, to a camera optical lens suitable for handheld terminal devices such as smart phones or digital cameras and camera devices such as monitors or PC lenses.

BACKGROUND

With the emergence of smart phones in recent years, the demand for miniature camera lens is increasing day by day, but in general the photosensitive devices of camera lens are nothing more than Charge Coupled Device (CCD) or Complementary Metal-Oxide Semiconductor Sensor (CMOS sensor), and as the progress of the semiconductor manufacturing technology makes the pixel size of the photosensitive devices become smaller, plus the current development trend of electronic products towards better functions and thinner and smaller dimensions, miniature camera lenses with good imaging quality therefore have become a mainstream in the market.

In order to obtain better imaging quality, the lens that is traditionally equipped in mobile phone cameras adopts a three-piece or four-piece lens structure. Also, with the development of technology and the increasing diverse demands from users, the pixel area of photosensitive devices is becoming smaller and smaller and the requirement of the system on the imaging quality is increasingly higher, such that a six-piece lens structure gradually emerges in lens designs. It is urgent to provide a long-focal-length camera lens, which has excellent optical characteristics, is ultra-thin and fully corrected chromatic aberrations.

SUMMARY

In view of the problems, the present disclosure provides a camera optical lens, which has good optical performance while satisfying design requirements for ultra-thin, long-focal-length lenses having large apertures.

In an embodiment, the present disclosure provides a camera optical lens. The camera optical lens includes, from an object side to an image side, a first lens; a second lens; a third lens; a fourth lens; a fifth lens; and a sixth lens. The camera optical lens satisfies following conditions: 0.45≤f1/f≤0.80; −10.00≤R9/R10≤−1.50; and 0.35≤d3/d4≤0.70, where f denotes a focal length of the camera optical lens; f1 denotes a focal length of the first lens; R9 denotes a curvature radius of an object side surface of the fifth lens; R10 denotes a curvature radius of an image side surface of the fifth lens; d3 denotes an on-axis thickness of the second lens; and d4 denotes an on-axis distance from an image side surface of the second lens to an object side surface of the third lens.

As an improvement, the camera optical lens further satisfies a following condition: 1.20≤f6/f≤4.00, where f6 denotes a focal length of the sixth lens.

As an improvement, the camera optical lens further satisfies following conditions: −2.88≤(R1+R2)/(R1−R2)≤−0.35; and 0.06≤d1/TTL≤0.23, where R1 denotes a curvature radius of an object side surface of the first lens; R2 denotes a curvature radius of an image side surface of the first lens; d1 denotes an on-axis thickness of the first lens; and TTL denotes a total optical length from the object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies following conditions: −3.65≤f2/f≤−0.32; 0.74≤(R3+R4)/(R3−R4)≤6.14; and 0.02≤d3/TTL≤0.07, where f2 denotes a focal length of the second lens; R3 denotes a curvature radius of an object side surface of the second lens; R4 denotes a curvature radius of the image side surface of the second lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies following conditions: 0.51≤f3/f≤2.98; −7.27≤(R5+R6)/(R5−R6)≤−0.74; and 0.03≤d5/TTL≤0.17, where f3 denotes a focal length of the third lens; R5 denotes a curvature radius of the object side surface of the third lens; R6 denotes a curvature radius of an image side surface of the third lens; d5 denotes an on-axis thickness of the third lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies following conditions: −13.84≤f4/f≤−1.39; −0.19≤(R7+R8)/(R7−R8)≤14.34; and 0.02≤d7/TTL≤0. 16, where f4 denotes a focal length of the fourth lens; R7 denotes a curvature radius of an object side surface of the fourth lens; R8 denotes a curvature radius of an image side surface of the fourth lens; d7 denotes an on-axis thickness of the fourth lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies following conditions: −2.07≤f5/f≤−0.42; 0.12≤(R9+R10)/(R9−R10)≤1.22; and 0.02≤d9/TTL≤0.16, where f5 denotes a focal length of the fifth lens; d9 denotes an on-axis thickness of the fifth lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies following conditions: −7.74≤(R11+R12)/(R11−R12)≤−0.50; and 0.05≤d11/TTL≤0.20, where R11 denotes a curvature radius of an object side surface of the sixth lens; R12 denotes a curvature radius of an image side surface of the sixth lens; d11 denotes an on-axis thickness of the sixth lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies a following condition: f/IH≥1.90, where IH denotes an image height of the camera optical lens.

As an improvement, the camera optical lens further satisfies a following condition: Fno≤1.90, where Fno denotes an F number of the camera optical lens.

The present disclosure has advantageous effects in that the camera optical lens according to the present disclosure has excellent optical characteristics and is ultra-thin, wide-angle and has a large aperture, making it especially suitable for camera optical lens assembly of mobile phones and WEB camera optical lenses formed by high-pixel camera elements such as CCD and CMOS.

BRIEF DESCRIPTION OF DRAWINGS

Many aspects of the exemplary embodiment can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.

FIG. 1 is a schematic diagram of a structure of a camera optical lens according to Embodiment 1 of the present disclosure;

FIG. 2 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 1;

FIG. 3 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 1;

FIG. 4 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a structure of a camera optical lens according to Embodiment 2 of the present disclosure;

FIG. 6 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 5;

FIG. 7 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 5;

FIG. 8 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 5;

FIG. 9 is a schematic diagram of a structure of a camera optical lens according to Embodiment 3 of the present disclosure;

FIG. 10 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 9;

FIG. 11 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 9; and

FIG. 12 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 9;

FIG. 13 is a schematic diagram of a structure of a camera optical lens according to Embodiment 4 of the present disclosure;

FIG. 14 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 13;

FIG. 15 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 13; and

FIG. 16 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 13.

DESCRIPTION OF EMBODIMENTS

The present disclosure will hereinafter be described in detail with reference to several exemplary embodiments. To make the technical problems to be solved, technical solutions and beneficial effects of the present disclosure more apparent, the present disclosure is described in further detail together with the figure and the embodiments. It should be understood the specific embodiments described hereby is only to explain the disclosure, not intended to limit the disclosure.

Embodiment 1

The present disclosure provides a camera optical lens 10. FIG. 1 shows the camera optical lens 10 according to Embodiment 1 of the present disclosure. The camera optical lens 10 includes 6 lenses. For example, the camera optical lens 10 includes, from an object side to an image side, a first lens L1, an aperture S1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6. An optical element such as an optical filter (GF) can be arranged between the sixth lens L6 and an image plane S1.

The first lens L1 is made of a plastic material, the second lens L2 is made of a plastic material, the third lens L3 is made of a plastic material, the fourth lens L4 is made of a plastic material, the fifth lens L5 is made of a plastic material, and the sixth lens L6 is made of a plastic material.

In the present embodiment, a focal length of the camera optical lens 10 is defined as f, and a focal length of the first lens L1 is defined as f1. The camera optical lens 10 should satisfy a condition of 0.45≤f1/f≤0.80, which specifies a ratio of the focal length f1 of the first lens L1 to the focal length f of the system. When the condition is satisfied, it is beneficial for correction of aberrations, thereby improving imaging quality.

A curvature radius of an object side surface of the fifth lens L5 is defined as R9, and a curvature radius of an image side surface of the fifth lens L5 is defined as R10. The camera optical lens 10 should satisfy a condition of −10.00≤R9/R10≤−1.50, which specifies a shape of the fifth lens L5. This condition can alleviate deflection of light passing through the lens while effectively reducing the aberrations.

An on-axis thickness of the second lens L2 is defined as d3, and an on-axis distance from an image side surface of the second lens L2 to an object side surface of the third lens L3 is defined as d4. The camera optical lens 10 should satisfy a condition of 0.35≤d3/d4≤0.70, which can achieve the long focal-length of lenses.

The focal length of the camera optical lens 10 is defined as f, and a focal length of the sixth lens L6 is defined as f6. The camera optical lens 10 further satisfies a condition of −1.20≤f6/f≤4.00. when f6/f satisfies this condition, refractive power of the sixth lens L6 can be effectively distributed, so as to correct the aberrations of the optical system, thereby improving the imaging quality.

In the present embodiment, the first lens L1 has a positive refractive power, and the first lens L1 includes an object side surface being convex in a paraxial region and an image side surface being concave in the paraxial region.

A curvature radius of the object side surface of the first lens L1 is defined as R1, and a curvature radius of the image side surface of the first lens L1 is defined as R2. The camera optical lens 10 should satisfy a condition of −2.88≤(R1+R2)/(R1−R2)≤−0.35, which can reasonably control a shape of the first lens L1, allowing the first lens L1 to effectively correct spherical aberrations of the system. As an example, −1.80≤(R1+R2)/(R1−R2)≤−0.43.

A total optical length from the object side surface of the first lens L1 to an image plane of the camera optical lens 10 along an optic axis is defined as TTL, and an on-axis thickness of the first lens L1 is defined as d1. The camera optical lens 10 should satisfy a condition of 0.06≤d1/TTL≤0.23, which can achieve the ultra-thin lenses. As an example, 0.10≤d1/TTL≤0.18.

In the present embodiment, the second lens L2 has a negative refractive power, and the second lens L2 includes an object side surface being convex in a paraxial region and an image side surface being concave in the paraxial region.

The focal length of the camera optical lens 10 is f, and a focal length of the second lens L2 is f2. The camera optical lens 10 further satisfies a condition of −3.65≤f2/f≤−0.32. By controlling a negative refractive power of the second lens L2 within an appropriate range, the correction of aberrations of the optical system can be facilitated. As an example, −2.28≤f2/f≤−0.40.

A curvature radius of the object side surface of the second lens L2 is defined as R3, and a curvature radius of the image side surface of the second lens L2 is defined as R4. The camera optical lens 10 should satisfy a condition of 0.74≤(R3+R4)/(R3−R4)≤6.14, which specifies a shape of the second lens L2. This condition can facilitate correction of an on-axis aberration with development towards ultra-thin lenses. As an example, 1.18≤(R3+R4)/(R3−R4)≤4. 91.

The on-axis thickness of the second lens L2 is defined as d3, and the total optical length from the object side surface of the first lens L1 to an image plane of the camera optical lens 10 along an optic axis is defined as TTL. The camera optical lens 10 should satisfy a condition of 0.02≤d3/TTL≤0.07, which can achieve the ultra-thin lenses. As an example, 0.03≤d3/TTL≤0.06.

In the present embodiment, the third lens L3 has a positive refractive power, and the third lens L3 includes an object side surface being convex in a paraxial region and an image side surface being concave in the paraxial region.

The focal length of the camera optical lens 10 is defined as f, and a focal length of the third lens L3 is defined as f3. The camera optical lens 10 further satisfies a condition of 0.51≤f3/f≤2.98. The appropriate distribution of the refractive power leads to better imaging quality and a lower sensitivity of the system. As an example, 0.82≤f3/f≤2.38.

A curvature radius of the object side surface of the third lens L3 is defined as R5, and a curvature radius of the image side surface of the third lens L3 is defined as R6. The camera optical lens 10 should satisfy a condition of −7.27≤(R5+R6)/(R5−R6)≤−0.74, which can effectively control a shape of the third lens L3, thereby facilitating the shaping of the third lens L3. This condition can alleviate the deflection of light passing through the lens while effectively reducing aberrations. As an example, −4.54≤(R5+R6)/(R5−R6)≤−0.92.

An on-axis thickness of the third lens L3 is defined as d5, and the total optical length from the object side surface of the first lens L1 to an image plane of the camera optical lens 10 along an optic axis is defined as TTL. The camera optical lens 10 should satisfy a condition of 0.03≤d5/TTL≤0.17, which can achieve the ultra-thin lenses. As an example,0.05≤d5/TTL≤0.14.

In the present embodiment, the fourth lens L4 has a negative refractive power, and the fourth lens L4 includes an object side surface being convex in a paraxial region and an image side surface being concave in the paraxial region.

The focal length of the camera optical lens 10 is f, and a focal length of the fourth lens L4 is f4. The camera optical lens 10 further satisfies a condition of −13.84≤f4/f≤−1.39, which specifies a ratio of the focal length f4 of the fourth lens L4 and the focal length of the system. This condition can facilitate the improvement of an optical performance of the system.

As an example, −8.65≤f4/f≤−1.74.

A curvature radius of the object side surface of the fourth lens L4 is defined as R7, and a curvature radius of the image side surface of the fourth lens L4 is defined as R8. The camera optical lens 10 should satisfy a condition of −0.19≤(R7+R8)/(R7−R8)≤14.34, which specifies a shape of the fourth lens L4. This condition can facilitate the correction of an off-axis aberration with development towards ultra-thin lenses. As an example, −0.12≤(R9+R10)/(R9−R10)≤11.47.

An on-axis thickness of the fourth lens L4 is defined as d7, and the total optical length from the object side surface of the first lens L1 to an image plane of the camera optical lens 10 along an optic axis is defined as TTL. The camera optical lens 10 should satisfy a condition of 0.02≤d7/TTL≤0.16, which can achieve the ultra-thin lenses. As an example, 0.03≤d7/TTL≤0.12.

In the present embodiment, the fifth lens L5 has a negative refractive power, and the fifth lens L5 includes an object side surface being concave in a paraxial region and an image side surface being concave in the paraxial region.

The focal length of the camera optical lens 10 is defined as f, and a focal length of the fifth lens L5 is defined as f5. The camera optical lens 10 should satisfy a condition of −2.07≤f5/f≤−0.42. This condition can effectively make a light angle of the camera lens gentle and reduce the tolerance sensitivity. As an example, −1.29≤f5/f≤−0.53.

A curvature radius of the object side surface of the fifth lens L5 is defined as R9, and a curvature radius of the image side surface of the fifth lens L5 is defined as R10. The camera optical lens 10 should satisfy a condition of 0.12≤(R9+R10)/(R9−R10)≤1.22, which specifies a shape of the fifth lens L5. This condition can facilitate the correction of an off-axis aberration with development towards ultra-thin lenses. As an example, 0.18≤(R9+R10)/(R9−R10)≤0.98.

An on-axis thickness of the fifth lens L5 is defined as d9, and the total optical length from the object side surface of the first lens L1 to an image plane of the camera optical lens 10 along an optic axis is defined as TTL. The camera optical lens 10 should satisfy a condition of 0.02≤d9/TTL≤0.16, which can achieve the ultra-thin lenses. As an example, 0.03≤d9/TTL≤0.13.

In the present embodiment, the sixth lens L6 has a positive refractive power, and the sixth lens L6 includes an object side surface being convex in a paraxial region and an image side surface being concave in the paraxial region.

A curvature radius of the object side surface of the sixth lens L6 is defined as R11, and a curvature radius of the image side surface of the sixth lens L6 is defined as R12. The camera optical lens 10 should satisfy a condition of −7.74≤(R11+R12)/(R11−R12)≤−0.50, which specifies a shape of the sixth lens L6. This condition can facilitate the correction of an off-axis aberration with development towards ultra-thin lenses. As an example, −4.84≤(R11+R12)/(R11−R12)≤−0.63.

An on-axis thickness of the sixth lens L6 is defined as d11, and the total optical length from the object side surface of the first lens L1 to an image plane of the camera optical lens 10 along an optic axis is defined as TTL. The camera optical lens 10 should satisfy a condition of 0.05≤d11/TTL≤0.20, which can achieve the ultra-thin lenses. As an example, 0.08≤d11/TTL≤0.16.

In the present embodiment, the total optical length from the object side surface of the first lens L1 to an image plane of the camera optical lens 10 along an optic axis is defined as TTL, and an image height of the camera optical lens 10 is defined as IH. The camera optical lens 10 should satisfy a condition of TTLAH≤2.32, which can achieve the ultra-thin lenses.

In the present embodiment, the focal length of the camera optical lens 10 is defined as f, and an image height of the camera optical lens 10 is defined as IH. The camera optical lens 10 should satisfy a condition of f/IH≥1.90, thereby achieving a long focal length.

In the present embodiment, an F number (FNO) of the camera optical lens 10 is smaller than or equal to 1.90, thereby leading to a large aperture and high imaging performance.

In the present embodiment, the focal length of the camera optical lens 10 is defined as f, and a combined focal length of the first lens L1 and the second lens L2 is defined as f12. The camera optical lens 10 should satisfy a condition of 0.54≤f12/f≤2.67. This condition can eliminate aberration and distortion of the camera optical lens 10, suppress the back focal length of the camera optical lens 10, and maintain the miniaturization of the camera lens system group. As an example, 0.86≤f12/f≤2.13.

When the above conditions are satisfied, the camera optical lens 10 will have good optical performance while satisfying design requirements for ultra-thin, long-focal-length lenses having large apertures. With these characteristics, the camera optical lens 10 is especially suitable for camera optical lens assembly of mobile phones and WEB camera optical lenses formed by imaging elements such as high-pixel CCD and CMOS.

The following examples will be used to describe the camera optical lens 10 of the present disclosure. The symbols recorded in each example will be described as follows. The focal length, on-axis distance, curvature radius, on-axis thickness, inflexion point position, and arrest point position are all in units of mm.

TTL: total optical length (total optical length from the object side surface of the first lens L1 to the image plane of the camera optical lens along the optic axis) in units of mm.

In an example, inflexion points and/or arrest points can be arranged on the object side surface and/or image side surface of the lens, in order to satisfy the demand for the high quality imaging. The description below can be referred to for specific implementations.

Table 1 and Table 2 shows design data of the camera optical lens 10 according to Embodiment 1 of the present disclosure.

TABLE 1 R d nd νd S1 ∞ d0= −0.917 R1 2.198 d1= 1.041 nd1 1.5444 ν1 55.82 R2 27.442 d2= 0.020 R3 3.401 d3= 0.272 nd2 1.6610 ν2 20.53 R4 1.936 d4= 0.594 R5 3.544 d5= 0.480 nd3 1.5444 ν3 55.82 R6 6.233 d6= 0.660 R7 5.205 d7= 0.250 nd4 1.6610 ν4 20.53 R8 4.072 d8= 0.774 R9 −13.854 d9= 0.659 nd5 1.5444 ν5 55.82 R10 3.757 d10= 0.242 R11 7.618 d11= 0.871 nd6 1.6610 ν6 20.53 R12 74.835 d12= 0.613 R13 ∞ d13= 0.210 ndg 1.5168 νg 64.17 R14 ∞ d14= 0.315

In the table, meanings of various symbols will be described as follows.

S1: aperture;

R: curvature radius of an optical surface, a central curvature radius of a lens;

R1: curvature radius of the object side surface of the first lens L1;

R2: curvature radius of the image side surface of the first lens L1;

R3: curvature radius of the object side surface of the second lens L2;

R4: curvature radius of the image side surface of the second lens L2;

R5: curvature radius of the object side surface of the third lens L3;

R6: curvature radius of the image side surface of the third lens L3;

R7: curvature radius of the object side surface of the fourth lens L4;

R8: curvature radius of the image side surface of the fourth lens L4;

R9: curvature radius of the object side surface of the fifth lens L5;

R10: curvature radius of the image side surface of the fifth lens L5;

R11: curvature radius of the object side surface of the sixth lens L6;

R12: curvature radius of the image side surface of the sixth lens L6;

R13: curvature radius of an object side surface of the optical filter GF;

R14: curvature radius of an image side surface of the optical filter GF;

d: on-axis thickness of a lens and an on-axis distance between lenses;

d0: on-axis distance from the aperture S1 to the object side surface of the first lens L1;

d1: on-axis thickness of the first lens L1;

d2: on-axis distance from the image side surface of the first lens L1 to the object side surface of the second lens L2;

d3: on-axis thickness of the second lens L2;

d4: on-axis distance from the image side surface of the second lens L2 to the object side surface of the third lens L3;

d5: on-axis thickness of the third lens L3;

d6: on-axis distance from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;

d7: on-axis thickness of the fourth lens L4;

d8: on-axis distance from the image side surface of the fourth lens L4 to the object side surface of the fifth lens L5;

d9: on-axis thickness of the fifth lens L5;

d10: on-axis distance from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6;

d11: on-axis thickness of the sixth lens L6;

d12: on-axis distance from the image side surface of the sixth lens L6 to the object side surface of the optical filter GF;

d13: on-axis thickness of the optical filter GF;

d14: on-axis distance from the image side surface of the optical filter GF to the image plane;

nd: refractive index of d line;

nd1: refractive index of d line of the first lens L1;

nd2: refractive index of d line of the second lens L2;

nd3: refractive index of d line of the third lens L3;

nd4: refractive index of d line of the fourth lens L4;

nd5: refractive index of d line of the fifth lens L5;

nd6: refractive index of d line of the sixth lens L6;

ndg: refractive index of d line of the optical filter GF;

vd: abbe number;

v1: abbe number of the first lens L1;

v2: abbe number of the second lens L2;

v3: abbe number of the third lens L3;

v4: abbe number of the fourth lens L4;

v5: abbe number of the fifth lens L5;

v6: abbe number of the sixth lens L6;

vg: abbe number of the optical filter GF.

Table 2 shows aspheric surface data of respective lens in the camera optical lens 10 according to Embodiment 1 of the present disclosure.

TABLE 2 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10 R1 −1.9977E−01  1.6747E−03 −4.7377E−04   3.5663E−04 −5.2443E−04  R2 −9.9000E+01  1.9815E−02 −1.2545E−02   9.9088E−03 −6.6140E−03  R3 −3.3906E+00 −2.7249E−02 1.9859E−02 −5.3974E−03 −9.1922E−05  R4 −4.0103E−01 −5.7860E−02 4.1706E−02 −2.0918E−02 1.2649E−02 R5  3.6343E+00 −7.0902E−03 8.1040E−03 −9.2280E−03 1.6765E−02 R6  1.1545E+01 −1.8499E−02 1.0686E−02 −2.3333E−02 4.7332E−02 R7 −6.2039E+01 −4.3504E−02 −5.6342E−02   3.5623E−02 −1.3650E−02  R8 −5.8822E+01  1.8099E−02 −1.5023E−01   2.1485E−01 −2.5186E−01  R9 −9.8911E+01 −9.1205E−02 3.0274E−02 −3.1193E−02 9.3886E−03 R10 −2.0432E+01 −6.0855E−02 4.0025E−02 −3.2601E−02 1.9408E−02 R11  7.5492E+00 −6.2428E−02 3.1848E−02 −1.6253E−02 6.9926E−03 R12 −9.9000E+01 −3.8144E−02 1.0310E−02 −3.7801E−03 1.3991E−03 Aspherical surface coefficients A12 A14 A16 A18 A20 R1  4.4975E−04 −2.5051E−04   8.0047E−05 −1.3818E−05   9.2153E−07 R2  3.2798E−03 −1.1404E−03   2.5121E−04 −3.0997E−05   1.6073E−06 R3  1.4839E−03 −9.7452E−04   2.9860E−04 −4.3327E−05   2.3386E−06 R4 −6.0262E−03 2.2986E−03 −7.3108E−04 1.6504E−04 −1.9866E−05 R5 −1.6730E−02 1.0345E−02 −3.7075E−03 6.7330E−04 −3.8035E−05 R6 −6.0321E−02 4.8565E−02 −2.3896E−02 6.5986E−03 −7.8146E−04 R7 −1.6849E−02 3.0475E−02 −2.2079E−02 7.9270E−03 −1.1335E−03 R8  2.1864E−01 −1.3047E−01   5.0325E−02 −1.1225E−02   1.1105E−03 R9  1.3178E−02 −2.0437E−02   1.2343E−02 −3.6215E−03   4.2890E−04 R10 −8.4119E−03 2.4611E−03 −4.4722E−04 4.4890E−05 −1.8837E−06 R11 −2.5463E−03 6.7881E−04 −1.1458E−04 1.0625E−05 −4.0837E−07 R12 −3.9650E−04 7.4382E−05 −8.3699E−06 4.8511E−07 −1.0159E−08

In Table 2, k is a conic coefficient, and A4, A6, A8, A10, Al2, A14, A16, A18 and A20 are aspheric surface coefficients.

IH: image height

y=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰ +A12x ¹² +A14x ¹⁴ +A16x ¹⁶ +A18x ¹⁸ +A20x ²⁰   (1)

In the present embodiment, an aspheric surface of each lens surface uses the aspheric surfaces represented by the above condition (1). However, the present disclosure is not limited to the aspherical polynomial form represented by the condition (1).

Table 3 and Table 4 show design data of inflexion points and arrest points of respective lens in the camera optical lens 10 according to Embodiment 1 of the present disclosure. P1R1 and P1R2 represent the object side surface and the image side surface of the first lens L 1, respectively; P2R1 and P2R2 represent the object side surface and the image side surface of the second lens L2, respectively; P3R1 and P3R2 represent the object side surface and the image side surface of the third lens L3, respectively; P4R1 and P4R2 represent the object side surface and the image side surface of the fourth lens L4, respectively; P5R1 and P5R2 represent the object side surface and the image side surface of the fifth lens L5, respectively, and P6R1 and P6R2 represent the object side surface and the image side surface of the sixth lens L6, respectively. The data in the column “inflexion point position” indicate vertical distances from inflexion points arranged on each lens surface to the optic axis of the camera optical lens 10. The data in the column “arrest point position” indicate vertical distances from arrest points arranged on each lens surface to the optic axis of the camera optical lens 10.

TABLE 3 Number of Inflexion point Inflexion point inflexion points position 1 position 2 P1R1 1 1.775 P1R2 1 1.535 P2R1 0 P2R2 0 P3R1 0 P3R2 0 P4R1 1 0.405 P4R2 2 0.495 1.325 P5R1 1 1.515 P5R2 2 0.565 2.195 P6R1 2 0.505 2.345 P6R2 2 0.175 2.635

TABLE 4 Number of arrest points Arrest point position 1 P1R1 0 P1R2 0 P2R1 0 P2R2 0 P3R1 0 P3R2 0 P4R1 1 0.685 P4R2 1 0.855 P5R1 0 P5R2 1 1.095 P6R1 1 1.005 P6R2 1 0.305

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 470 nm, 510 nm, 550 nm, 650 nm and 610 nm after passing the camera optical lens 10 according to Embodiment 1. FIG. 4 illustrates a field curvature and a distortion of light with a wavelength of 550 nm after passing the camera optical lens 10 according to Embodiment 1, in which a field curvature S is a field curvature in a sagittal direction and T is a field curvature in a tangential direction.

Table 17 below further lists various values of Embodiments 1, 2, 3, and 4 and parameters which are specified in the above conditions.

As shown in Table 17, Embodiment 1 satisfies the respective conditions.

In the present embodiment, the entrance pupil diameter of the camera optical lens is 3.766 mm. The image height is 3.27 mm. A field of view (FOV) along a diagonal direction is 48.48°. Thus, the camera optical lens 10 is an ultra-thin, long-focal-length, wide-angle lens in which the on-axis and off-axis aberrations sufficiently are corrected, thereby having better optical characteristics.

Embodiment 2

Embodiment 2 is basically the same as Embodiment 1 and involves symbols having the same meanings as Embodiment 1. Only differences therebetween will be described in the following.

The image side surface of the first lens L1 is convex in a paraxial region.

Table 5 and Table 6 show design data of a camera optical lens 20 in Embodiment 2 of the present disclosure.

TABLE 5 R d nd νd S1 ∞ d0= −0.736 R1 2.394 d1= 1.063 nd1 1.5661 ν1 37.71 R2 −7.597 d2= 0.020 R3 9.668 d3= 0.245 nd2 1.6610 ν2 20.53 R4 1.858 d4= 0.682 R5 4.035 d5= 0.705 nd3 1.5661 ν3 37.71 R6 79.161 d6= 0.768 R7 54.121 d7= 0.649 nd4 1.6700 ν4 19.39 R8 20.736 d8= 1.262 R9 −8.255 d9= 0.318 nd5 1.5444 ν5 55.82 R10 3.820 d10= 0.046 R11 7.335 d11= 0.900 nd6 1.6610 ν6 20.53 R12 21.670 d12= 0.095 R13 ∞ d13= 0.210 ndg 1.5168 νg 64.17 R14 ∞ d14= 0.613

Table 6 shows aspheric surface data of respective lenses in the camera optical lens 20 according to Embodiment 2 of the present disclosure.

TABLE 6 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10 R1 −4.4050E−01  2.0130E−03 7.6376E−04 −9.5695E−04 4.3030E−04 R2 −1.8171E+02  3.9701E−02 −4.3457E−02   3.5786E−02 −2.1388E−02  R3  6.9396E+00 −4.8151E−16 3.5488E−15 −9.9441E−15 1.4424E−14 R4 −4.6651E−01 −6.8931E−02 1.0239E−01 −9.1144E−02 5.1021E−02 R5  2.9437E+00  9.4378E−03 1.6825E−02 −4.0010E−02 7.0709E−02 R6  1.3970E+02 −1.1250E−02 −4.7690E−03   2.2379E−02 −4.5937E−02  R7  3.0000E+02 −5.2154E−02 −2.1967E−03  −1.5599E−02 3.6143E−02 R8 −1.6673E+01 −3.5115E−02 −2.4208E−03   7.8887E−03 −2.1805E−02  R9  1.9360E+01 −1.1791E−01 1.0945E−01 −1.5171E−01 1.5354E−01 R10 −5.2509E+01 −1.4844E−01 1.6473E−01 −1.2198E−01 5.7128E−02 R11  7.9356E+00 −1.4177E−01 1.6751E−01 −1.2213E−01 5.5930E−02 R12 −1.3162E+02 −2.0986E−02 9.1622E−03 −4.4972E−03 1.8504E−03 Aspherical surface coefficients A12 A14 A16 A18 A20 R1 −1.6739E−04 4.9417E−05 −1.4508E−05 2.8493E−06 −2.5258E−07 R2  8.9295E−03 −2.5198E−03   4.5450E−04 −4.7049E−05   2.1035E−06 R3 −1.2134E−14 6.1559E−15 −1.8589E−15 3.0776E−16 −2.1504E−17 R4 −9.8196E−03 −7.3454E−03   5.6648E−03 −1.5512E−03   1.5854E−04 R5 −7.7117E−02 5.1636E−02 −2.0717E−02 4.5579E−03 −4.1993E−04 R6  5.5272E−02 −4.0151E−02   1.7302E−02 −4.0600E−03   4.0182E−04 R7 −6.0983E−02 6.6414E−02 −4.3568E−02 1.5738E−02 −2.3755E−03 R8  3.4549E−02 −3.0965E−02   1.6205E−02 −4.5779E−03   5.4329E−04 R9 −1.0613E−01 4.8057E−02 −1.3488E−02 2.1319E−03 −1.4468E−04 R10 −1.8549E−02 4.3270E−03 −6.9156E−04 6.6247E−05 −2.7975E−06 R11 −1.6982E−02 3.4417E−03 −4.4923E−04 3.4140E−05 −1.1460E−06 R12 −5.4833E−04 1.0418E−04 −1.1923E−05 7.4636E−07 −1.9578E−08

Table 7 and Table 8 show design data of inflexion points and arrest points of respective lens in the camera optical lens 20 according to Embodiment 2 of the present disclosure.

TABLE 7 Number of Inflexion point Inflexion point inflexion points position 1 position 2 P1R1 1 1.755 P1R2 2 0.475 1.495 P2R1 0 P2R2 0 P3R1 0 P3R2 2 0.305 1.285 P4R1 1 0.175 P4R2 2 0.345 1.315 P5R1 1 1.565 P5R2 2 0.355 2.005 P6R1 1 0.345 P6R2 1 0.465

TABLE 8 Number of Arrest point Arrest point arrest points position 1 position 2 P1R1 0 P1R2 2 1.365 1.585 P2R1 0 P2R2 0 P3R1 0 P3R2 1 0.525 P4R1 1 0.295 P4R2 1 0.575 P5R1 0 P5R2 1 0.765 P6R1 1 1.165 P6R2 1 0.855

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 470 nm, 510 nm, 550 nm, 650 nm and 610 nm after passing the camera optical lens 20 according to Embodiment 2. FIG. 8 illustrates a field curvature and a distortion of light with a wavelength of 550 nm after passing the camera optical lens 20 according to Embodiment 2.

As shown in Table 17, Embodiment 2 satisfies the respective conditions.

In the present embodiment, the entrance pupil diameter of the camera optical lens is 3.826 mm. The image height is 3.27 mm. The FOV along a diagonal direction is 48.10°. Thus, the camera optical lens 10 is an ultra-thin, long-focal-length, wide-angle lens in which the on-axis and off-axis aberrations are sufficiently corrected, thereby having better optical characteristics.

Embodiment 3

Embodiment 3 is basically the same as Embodiment 1 and involves symbols having the same meanings as Embodiment 1. Only differences therebetween will be described in the following.

The image side surface of the sixth lens L6 is convex in a paraxial region.

Table 9 and Table 10 show design data of a camera optical lens 30 in Embodiment 3 of the present disclosure.

TABLE 9 R d nd νd S1 ∞ d0= −0.889 R1 2.262 d1= 1.100 nd1 1.5444 ν1 55.82 R2 28.599 d2= 0.037 R3 3.224 d3= 0.296 nd2 1.6610 ν2 20.53 R4 1.813 d4= 0.730 R5 3.431 d5= 0.580 nd3 1.5444 ν3 55.82 R6 6.880 d6= 0.505 R7 6.013 d7= 0.250 nd4 1.6610 ν4 20.53 R8 4.874 d8= 0.744 R9 −6.759 d9= 0.764 nd5 1.5444 ν5 55.82 R10 4.225 d10= 0.132 R11 7.232 d11= 0.715 nd6 1.6610 ν6 20.53 R12 −51.033 d12= 0.613 R13 ∞ d13= 0.210 ndg 1.5168 νg 64.17 R14 ∞ d14= 0.581

Table 10 shows aspheric surface data of respective lenses in the camera optical lens 30 according to Embodiment 3 of the present disclosure.

TABLE 10 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10 R1 −1.9370E−01  1.1938E−03 −5.9732E−04   6.7461E−04 −7.8861E−04  R2 −2.0000E+02  1.8870E−02 −9.9590E−03   6.1420E−03 −3.9170E−03  R3 −3.0926E+00 −2.2137E−02 1.6382E−02 −3.9690E−03 −2.0804E−03  R4 −3.9136E−01 −5.2327E−02 3.4655E−02 −1.4776E−02 5.5945E−03 R5  3.4694E+00 −5.6211E−03 4.6064E−03 −4.5547E−03 1.1716E−02 R6  1.1225E+01 −2.0101E−02 1.2485E−02 −2.1582E−02 4.0426E−02 R7 −8.1088E+01 −5.4412E−02 −4.0036E−02   2.4614E−02 3.8386E−03 R8 −8.8215E+01  6.3133E−04 −1.3769E−01   2.1717E−01 −2.6939E−01  R9 −6.3043E+01 −9.3440E−02 2.9135E−02 −3.6276E−02 2.0279E−02 R10 −2.6984E+01 −6.2882E−02 4.2497E−02 −3.7472E−02 2.5749E−02 R11  8.5534E+00 −9.2716E−02 4.4443E−02 −2.6639E−02 1.5641E−02 R12 −3.4948E+02 −4.2958E−02 6.2135E−03  9.6370E−04 −1.4842E−03  Aspherical surface coefficients A12 A14 A16 A18 A20 R1 5.0963E−04 −2.0808E−04 4.9451E−05 −6.2921E−06 2.7701E−07 R2 2.1125E−03 −8.2338E−04 2.0140E−04 −2.7489E−05 1.5834E−06 R3 3.4965E−03 −2.0846E−03 6.5651E−04 −1.0805E−04 7.4242E−06 R4 4.3657E−04 −1.9293E−03 1.1595E−03 −3.3326E−04 3.8552E−05 R5 −1.5710E−02   1.2413E−02 −5.4905E−03   1.2297E−03 −1.0036E−04  R6 −5.1161E−02   4.2390E−02 −2.1723E−02   6.2220E−03 −7.5667E−04  R7 −3.3421E−02   3.5849E−02 −1.8150E−02   4.0178E−03 −1.8985E−04  R8 2.4537E−01 −1.5490E−01 6.3846E−02 −1.5465E−02 1.6883E−03 R9 3.6955E−04 −1.2241E−02 9.8572E−03 −3.4276E−03 4.6269E−04 R10 −1.3001E−02   4.4344E−03 −9.3284E−04   1.0764E−04 −5.1760E−06  R11 −7.7186E−03   2.6889E−03 −5.8057E−04   6.8287E−05 −3.3208E−06  R12 7.0503E−04 −1.8686E−04 2.8905E−05 −2.4843E−06 9.3737E−08

Table 11 and Table 12 show design data of inflexion points and arrest points of respective lens in the camera optical lens 30 according to Embodiment 3 of the present disclosure.

TABLE 11 Number of Inflexion point Inflexion point Inflexion point inflexion points position 1 position 2 position 3 P1R1 1 1.815 P1R2 1 1.515 P2R1 0 P2R2 0 P3R1 0 P3R2 0 P4R1 1 0.375 P4R2 2 0.445 1.345 P5R1 1 1.495 P5R2 3 0.525 2.045 2.195 P6R1 2 0.395 2.055 P6R2 1 2.335

TABLE 12 Number of arrest points Arrest point position 1 P1R1 0 P1R2 1 1.865 P2R1 0 P2R2 0 P3R1 0 P3R2 0 P4R1 1 0.645 P4R2 1 0.765 P5R1 0 P5R2 1 1.015 P6R1 1 0.735 P6R2 0

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 470 nm, 510 nm, 550 nm, 650 nm and 610 nm after passing the camera optical lens 30 according to Embodiment 3. FIG. 12 illustrates field curvature and distortion of light with a wavelength of 550 nm after passing the camera optical lens 30 according to Embodiment 3.

Table 17 below further lists various values of the present embodiment and parameters which are specified in the above conditions. Obviously, the camera optical lens according to the present embodiment satisfies the above conditions.

In the present embodiment, the entrance pupil diameter of the camera optical lens is 3.880 mm. The image height is 3.27 mm. The FOV along a diagonal direction is 46.28°. Thus, the camera optical lens 10 is an ultra-thin, long-focal-length, wide-angle lens in which the on-axis and off-axis aberrations are sufficiently corrected, thereby having better optical characteristics.

Embodiment 4

Embodiment 4 is basically the same as Embodiment 1 and involves symbols having the same meanings as Embodiment 1. Only differences therebetween will be described in the following.

The object side surface of the fourth lens L4 is concave in a paraxial region.

Table 13 and Table 14 show design data of a camera optical lens 40 in Embodiment 4 of the present disclosure.

TABLE 13 R d nd νd S1 ∞ d0= −0.708 R1 2.324 d1= 0.819 nd1 1.5444 ν1 55.82 R2 12.847 d2= 0.062 R3 4.631 d3= 0.318 nd2 1.6610 ν2 20.53 R4 2.813 d4= 0.464 R5 3.301 d5= 0.786 nd3 1.5806 ν3 60.08 R6 6.992 d6= 0.634 R7 −16.154 d7= 0.709 nd4 1.6610 ν4 20.53 R8 19.610 d8= 0.617 R9 −35.605 d9= 0.679 nd5 1.4959 ν5 81.65 R10 3.596 d10= 0.160 R11 7.237 d11= 0.895 nd6 1.6610 ν6 20.53 R12 12.283 d12= 0.211 R13 ∞ d13= 0.210 ndg 1.5168 νg 64.17 R14 ∞ d14= 0.247

Table 14 shows aspheric surface data of respective lenses in the camera optical lens 40 according to Embodiment 4 of the present disclosure.

TABLE 14 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10 R1 −1.7243E−01  1.9955E−03 −1.5704E−03   3.2311E−03 −3.2386E−03 R2 −1.7943E+02 −3.3831E−02 1.0431E−01 −1.2583E−01  9.5509E−02 R3 −5.4335E+00 −7.6679E−02 1.3090E−01 −1.2104E−01  6.0120E−02 R4 −2.7740E−01 −5.1179E−02 4.4496E−02  1.9119E−02 −1.0343E−01 R5  3.1988E+00 −9.4362E−03 1.1420E−02 −3.1382E−03 −2.8854E−03 R6  1.6242E+01 −1.3641E−02 2.7562E−05  2.6100E−02 −7.0202E−02 R7 −1.3036E+00 −6.7037E−02 −1.4622E−02   3.0139E−02 −6.2782E−02 R8 −2.5000E+02 −4.3592E−02 −2.7576E−03   1.1722E−02 −1.3068E−02 R9  1.4459E+02 −6.3835E−02 −2.9854E−03   6.9523E−03 −1.5161E−02 R10 −1.3098E+01 −3.8676E−02 8.8200E−03 −3.4642E−03  2.3751E−03 R11  7.4927E+00 −5.6221E−02 1.5059E−02 −5.6757E−03  3.5205E−03 R12 −4.7367E+01 −3.3412E−02 5.5067E−03 −5.7750E−04  1.3395E−05 Aspherical surface coefficients A12 A14 A16 A18 A20 R1 1.6521E−03 −3.2110E−04 −7.4235E−05   4.5166E−05 −5.9712E−06  R2 −4.7829E−02   1.5547E−02 −3.0885E−03   3.2996E−04 −1.3956E−05  R3 −4.5904E−03  −1.2664E−02 7.5705E−03 −1.8664E−03 1.7719E−04 R4 1.4069E−01 −1.0423E−01 4.4868E−02 −1.0547E−02 1.0472E−03 R5 7.0750E−03 −6.4343E−03 3.0296E−03 −7.1324E−04 6.1938E−05 R6 1.1050E−01 −1.0403E−01 5.7725E−02 −1.7197E−02 2.0909E−03 R7 7.8531E−02 −6.4463E−02 3.3594E−02 −9.9598E−03 1.2299E−03 R8 9.5861E−03 −3.9860E−03 9.6772E−04 −1.2243E−04 7.5025E−06 R9 1.7450E−02 −1.2638E−02 5.6482E−03 −1.3872E−03 1.4236E−04 R10 −1.4739E−03   5.2588E−04 −1.0165E−04   9.9794E−06 −3.8936E−07  R11 −2.0086E−03   6.8332E−04 −1.3112E−04   1.3292E−05 −5.5572E−07  R12 −2.2939E−05   1.2584E−05 −2.7095E−06   2.7029E−07 −1.0169E−08 

Table 15 and Table 16 show design data of inflexion points and arrest points of respective lens in the camera optical lens 40 according to Embodiment 4 of the present disclosure.

TABLE 15 Number of Inflexion point Inflexion point inflexion points position 1 position 2 P1R1 0 P1R2 1 1.555 P2R1 0 P2R2 0 P3R1 0 P3R2 0 P4R1 0 P4R2 2 0.305 1.305 P5R1 0 P5R2 1 0.675 P6R1 2 0.515 2.185 P6R2 2 0.455 2.555

TABLE 16 Number of Arrest point Arrest point arrest points position 1 position 2 P1R1 0 P1R2 0 P2R1 0 P2R2 0 P3R1 0 P3R2 0 P4R1 0 P4R2 1 0.515 P5R1 0 P5R2 1 1.295 P6R1 2 0.945 2.445 P6R2 1 0.805

FIG. 14 and FIG. 15 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 470 nm, 510 nm, 550 nm, 650 nm and 610 nm after passing the camera optical lens 40 according to Embodiment 4. FIG. 16 illustrates field curvature and distortion of light with a wavelength of 550 nm after passing the camera optical lens 40 according to Embodiment 4.

Table 17 below further lists various values of the present embodiment and parameters which are specified in the above conditions. Obviously, the camera optical lens according to the present embodiment satisfies the above conditions.

In the present embodiment, the entrance pupil diameter of the camera optical lens is 3.342 mm. The image height is 3.27 mm. The FOV along a diagonal direction is 50.00°. Thus, the camera optical lens 10 is an ultra-thin, long-focal-length, wide-angle lens in which the on-axis and off-axis aberrations are sufficiently corrected, thereby having better optical characteristics.

TABLE 17 Parameters and Embodi- Embodi- Embodi- Embodi- Conditions ment 1 ment 2 ment 3 ment 4 f 7.118 7.231 7.333 6.316 f1 4.310 3.326 4.430 5.052 f2 −7.271 −3.489 −6.769 −11.540 f3 14.139 7.442 11.822 9.949 f4 −30.734 −50.029 −42.232 −13.161 f5 −5.338 −4.734 −4.643 −6.532 f6 12.637 16.198 9.533 24.631 f12 7.623 12.852 8.378 7.571 Fno 1.89 1.89 1.89 1.89 f1/f 0.61 0.46 0.60 0.80 R9/R10 −3.69 −2.16 −1.60 −9.90 d3/d4 0.46 0.36 0.41 0.69

Those skilled in the art can understand that the above description is only some embodiments of the present disclosure. In practice, those skilled in the art can make various modifications to these embodiments in forms and details without departing from the spirit and scope of the present disclosure. 

What is claimed is:
 1. A camera optical lens, comprising, from an object side to an image side: a first lens; a second lens; a third lens; a fourth lens; a fifth lens; and a sixth lens, wherein the camera optical lens satisfies following conditions: 0.45≤f1/f≤0.80; −10.00≤R9/R10≤−1.50; and 0.35≤d3/d4≤0.70, where f denotes a focal length of the camera optical lens; f1 denotes a focal length of the first lens; R9 denotes a curvature radius of an object side surface of the fifth lens; R10 denotes a curvature radius of an image side surface of the fifth lens; d3 denotes an on-axis thickness of the second lens; and d4 denotes an on-axis distance from an image side surface of the second lens to an object side surface of the third lens.
 2. The camera optical lens as described in claim 1, further satisfying a following condition: 1.20≤f6/f≤4.00, where f6 denotes a focal length of the sixth lens.
 3. The camera optical lens as described in claim 1, further satisfying following conditions: −2. 88≤(R1+R2)/(R1−R2)≤−0.35; and 0.06≤d1/TTL≤0.23, where R1 denotes a curvature radius of an object side surface of the first lens; R2 denotes a curvature radius of an image side surface of the first lens; d1 denotes an on-axis thickness of the first lens; and TTL denotes a total optical length from the object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
 4. The camera optical lens as described in claim 1, further satisfying following conditions: −3.65≤f2/f≤−0.32; 0.74≤(R3+R4)/(R3−R4)≤6.14; and 0.02≤d3/TTL≤0.07, where f2 denotes a focal length of the second lens; R3 denotes a curvature radius of an object side surface of the second lens; R4 denotes a curvature radius of the image side surface of the second lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
 5. The camera optical lens as described in claim 1, further satisfying following conditions: 0.51≤f3/f≤2.98; −7.27≤(R5+R6)/(R5−R6)≤−0.74; and 0.03≤d5/TTL≤0.17, where f3 denotes a focal length of the third lens; R5 denotes a curvature radius of the object side surface of the third lens; R6 denotes a curvature radius of an image side surface of the third lens; d5 denotes an on-axis thickness of the third lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
 6. The camera optical lens as described in claim 1, further satisfying following conditions: −13.84≤f4/f≤−1.39; −0.19≤(R7+R8)/(R7−R8)≤14.34; and
 0. 02≤d7/TTL≤0.16, where f4 denotes a focal length of the fourth lens; R7 denotes a curvature radius of an object side surface of the fourth lens; R8 denotes a curvature radius of an image side surface of the fourth lens; d7 denotes an on-axis thickness of the fourth lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
 7. The camera optical lens as described in claim 1, further satisfying following conditions: −2.07≤f5/f≤−0.42; 0.12≤(R9+R10)/(R9−R10)≤1.22; and 0.02≤d9/TTL≤0.16, where f5 denotes a focal length of the fifth lens; d9 denotes an on-axis thickness of the fifth lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
 8. The camera optical lens as described in claim 1, further satisfying following conditions: −7.74≤(R11+R12)/(R11−R12)≤−0.50; and 0.05≤d11/TTL≤0.20, where R11 denotes a curvature radius of an object side surface of the sixth lens; R12 denotes a curvature radius of an image side surface of the sixth lens; d11 denotes an on-axis thickness of the sixth lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
 9. The camera optical lens as described in claim 1, further satisfying a following condition: f/IH≥1.90, where IH denotes an image height of the camera optical lens.
 10. The camera optical lens as described in claim 1, further satisfying a following condition: Fno≤1.90, where Fno denotes an F number of the camera optical lens. 